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ct upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

The mutual or reciprocal action of chemical agents upon each other, or the action upon such chemical agents of some form of energy, as heat, light, or electricity, resulting in a chemical change in one or more of these agents, with the production of new compounds or the manifestation of distinctive characters. See Blow…

, as by bleaching with mercuric chloride and subsequently subjecting anew to a developing agent. -- Re`de*vel"op*er (#), n. --Re`de*vel"op*ment (#), n.

gh deoxidation of an oxide of iron by exposure to a current of hydrogen or other reducing agent. When hydrogen is used the product is called also iron by hydrogen. -- To reduce an equation (Alg.), to bring the unknown quantity by itself on one side, and all the known quantities on the other side, without destroying th…

A reducent agent.

A reductive agent. Sir M. Hale.

A diplomatic agent's note asking for instructions from his government concerning a particular matter or point.

Having for its direct object a pronoun which refers to the agent or subject as its antecedent; -- said of certain verbs; as, the witness perjured himself; I bethought myself. Applied also to pronouns of this class; reciprocal; reflective. -- Re*flex"ive*ly, adv. -- Re*flex"ive*ness, n.

Direct management of public finance or public works by agents of the government for government account; -- opposed to the contract system.

An agent, deputy, or substitute, who supplies the place of another, or others, being invested with his or their authority.

A political agency at a native court in British India, held by an officer styled the Residentl: also, a Dutch commercial colony or province in the East Indies.

that which could not be known or discovered without divine or supernatural instruction or agency).

That which causes revulsion; specifically (Med.), a revulsive remedy or agent.

Formerly, an agent who went out with samples of goods to obtain orders; a commercial traveler. [Eng.]

See Magenta.

To get or start up; to rise. [Obs.] Night's black agents to their preys do rouse. Shak.

or less extent, or splitting up sugar into alcohol and carbonic acid. They are the active agents in producing fermentation of wine, beer, etc. Saccharomyces cerevisiæ is the yeast of sedimentary beer. Also called Torula.

nnection with the outer air; especially, a bent funnel tube with bulbs for adding those reagents which produce unpleasant fumes or violent effervescence. -- Safety valve, a valve which is held shut by a spring or weight and opens automatically to permit the escape of steam, or confined gas, water, etc., from a boiler,…

Same as Sagene.

orks, from nitrogenous matter, etc. It is largely employed as a source of ammonia, as a reagent, and as an expectorant in bronchitis. So called because originally made from the soot from camel's dung at the temple of Jupiter Ammon in Africa. Called also muriate of ammonia. -- Sal catharticus Etym: [NL.] (Old Med. Chem…